Nürnberg, Dirk; Riff, Tabitha; Bahr, André; Karas, Cyrus; Meier, Karl J F; Lippold, Jörg (2020): Stable isotopes and Mg/Ca ratios of Globorotalia truncatulinoides from sediment core M78/1_235-1 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.919497
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Published: 2020-06-26 • DOI registered: 2021-07-29
Abstract:
Stable carbon (δ13C) and oxygen isotope (δ18O) and Mg/Ca-measurements were performed on the planktonic subsurface-dwelling foraminiferal species Globorotalia truncatulinoides. The foraminiferal specimens were selected from piston core M78/1-235-1, which was recovered from Tobago Basin (11°36.53'N 60°57.86'W) from 852 m water depth during R/V Meteor Cruise 78/1. Sampling and analytical studies were carried out from 630 to 800 cm core depth at 1-2 cm spatial resolution. This dataset extends the existing subsurface proxy records (Reißig et al., 2019; doi:10.1594/PANGAEA.897083) further back in time, now focusing on the time period of the latest fully developed D/O events (~30-37 ka BP). The isotope analyses were performed in 2019 on a Thermo Scientific MAT 253 mass spectrometer with an automated Kiel IV Carbonate Preparation Device. Trace metal analyses were performed on a VARIAN 720-ES Axial ICP-OES, a simultaneous, axial-viewing Inductively Coupled Plasma - Optical Emission Spectrometer coupled to a VARIAN SPS3 sample preparation system. The proxy data provide information on the Tobago Basin subsurface hydrography in relation to Western Boundary Current and North Atlantic Subtropical Gyre interdynamics.
Supplement to:
Nürnberg, Dirk; Riff, Tabitha; Bahr, André; Karas, Cyrus; Meier, Karl J F; Lippold, Jörg (2021): Western boundary current in relation to Atlantic Subtropical Gyre dynamics during abrupt glacial climate fluctuations. Global and Planetary Change, 201, 103497, https://doi.org/10.1016/j.gloplacha.2021.103497
Coverage:
Latitude: 11.608833 * Longitude: -60.964333
Date/Time Start: 2009-03-22T14:54:00 * Date/Time End: 2009-03-22T14:54:00
Minimum DEPTH, sediment/rock: 0.395 m * Maximum DEPTH, sediment/rock: 8.000 m
Event(s):
M78/1_235-1 (235-1) * Latitude: 11.608833 * Longitude: -60.964333 * Date/Time: 2009-03-22T14:54:00 * Elevation: -852.2 m * Location: N. Tobago * Campaign: M78/1 * Basis: Meteor (1986) * Method/Device: Piston corer (PC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Nürnberg, Dirk | Geocode | |
| 2 | AGE | Age | ka BP | Nürnberg, Dirk | Geocode | |
| 3 | Sedimentation rate | SR | cm/ka | Nürnberg, Dirk | ||
| 4 | Globorotalia truncatulinoides, δ13C | G. truncatulinoides δ13C | ‰ PDB | Nürnberg, Dirk | Mass spectrometer, Finnigan, MAT 253; coupled with Carbonate preparation device, Finnigan, KIEL IV | vs. VPDB |
| 5 | Globorotalia truncatulinoides, δ18O | G. truncatulinoides δ18O | ‰ PDB | Nürnberg, Dirk | Mass spectrometer, Finnigan, MAT 253; coupled with Carbonate preparation device, Finnigan, KIEL IV | vs. VPDB |
| 6 | Globorotalia truncatulinoides, Magnesium/Calcium ratio | G. truncatulinoides Mg/Ca | mmol/mol | Nürnberg, Dirk | ||
| 7 | Globorotalia truncatulinoides, Magnesium/Calcium ratio | G. truncatulinoides Mg/Ca | mmol/mol | Nürnberg, Dirk | outlier | |
| 8 | Sub-surface temperature | SubT | °C | Nürnberg, Dirk | G.truncatulinoides; (Cléroux et al. 2008) | |
| 9 | Globorotalia truncatulinoides, Aluminium/Calcium ratio | G. truncatulinoides Al/Ca | mmol/mol | Nürnberg, Dirk | ||
| 10 | Globorotalia truncatulinoides, Iron/Calcium ratio | G. truncatulinoides Fe/Ca | mmol/mol | Nürnberg, Dirk | ||
| 11 | Globorotalia truncatulinoides, Manganese/Calcium ratio | G. truncatulinoides Mn/Ca | mmol/mol | Nürnberg, Dirk | ||
| 12 | δ18O, seawater, reconstructed | δ18Osw | ‰ SMOW | Nürnberg, Dirk | G.truncatulinoides; ice-volume-free | |
| 13 | Reference of data | Ref data | Nürnberg, Dirk |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
4588 data points
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